Body
Mick! Here is a helpful video regarding scopes and isolation
transformers on the test bench!
https://www.youtube.com/watch?v=XBsQ3sZ45Fk&feature=youtu.be
https://www.youtube.com/watch?v=xaELqAo4kkQ
On 11/3/2018 12:36 PM, Mick [email protected] [EVGRAY] wrote:
>
> Norm,
>
> Thanks for the nudge in the right direction. Now the process demands
> repeating with a totally isolated battery source configured the same
> way. Funny how I was concentrating on isolating and connecting
> saturated inductive charge without the first magnetic variable taken
> into account.
>
> I have had no problem creating the event with my grid power source and
> even warned Sven that an isolation transformer will not always protect
> his scope when messing around with this energy. My scope probe
> sitting on a bench shot me in the leg when I walked by when performing
> the experiments from my bench supply. The bench supply has an
> isolation transformer of sorts. Being it is torroidal there is more
> inter-winding capacitive coupling and mutual inductance than with the
> proper EI transformer though there is at least the electrostatic
> shield and galvanic isolation.
>
> Thanks for that reference. the Brit guy was funny, although I'm very
> familiar with iso transformers in audio work used for galvanic
> isolation and balancing to eliminate common mode noise.
>
>
> On 11/3/2018 4:42 AM, Norman Wootan [email protected] [EVGRAY] wrote:
>>
>> Mick! Your DUH reference is funny! To understand Isolation,
>> best to study and understand the Isolation Transformer. The super
>> high quality ones are built to eliminate noise and DC components that
>> effect sensitive instruments like EEG and EKG instruments. This will
>> give you an idea as to construction and purpose::
>>
>> https://en.m.wikipedia.org/wiki/Isolation_transformer
>>
>> A little tutorial as to how they work!
>>
>> https://www.youtube.com/watch?v=sfzy5IQMzyc&feature=youtu.be
>>
>> https://www.youtube.com/watch?v=14kPQif9P7c&feature=youtu.be
>>
>> https://toroid.com/Products/Medical-Isolation-Transformers
>>
>> The 230VAC, 5 HP locked rotor experiment was an example of
>> electrically isolated electrical circuitry when mains contactor was
>> opened since there was no neutral involve. There is magnetic and
>> capacitive coup[ling only The dielectric insulation was not
>> compromised therefore no electrical connection. The Chinese motor
>> experiment was isolated, (electrically) when the reversing action was
>> in transient. (Floating neutral) since there is a line neutral in the
>> 120VAC input.
>>
>>
>> On 11/2/2018 2:44 PM, Mick [email protected] [EVGRAY] wrote:
>>>
>>> Norm,
>>>
>>> Since you have performed mass research on this event would you concur
>>> with my long distance observation that the event is not only due to
>>> charge isolation but inclusive of a magnetic connection from source in
>>> addition to the saturated and lifted inductive load?
>>>
>>> Your bell buzzer and bell transformer acting as an isolation
>>> transformer.
>>>
>>> Both motor experiments, the small Emerson type and the HVAC unit with
>>> only two hot's no neutral, must have been powered by an isolation
>>> transformer of some type also such as the utility step down for the
>>> neighborhood or dedicated delta or wye for commercial or even acted as
>>> such from the dual windings of the HVAC motor.
>>>
>>> Have you reliably produced the NS from any type of isolated battery
>>> system, or in all such cases was there a magnetic connection to an earth
>>> bonding in another spot?
>>>
>>> My thoughts being one side of a transformer acting as a source is
>>> grounded and the secondary side isolated so that the only conceivable
>>> ground bonding on the sink might be considered as magnetic aside from
>>> the bonded motor frame or what not producing the reconnection.
>>>
>>> I may be pissing up a rope notwithstanding the NS seems to be predicated
>>> on a B field connection somewhere in the source feed though the neutral
>>> is isolated electrically.
>>>
>>> Perhaps this is a simple "Duh" to you that you had already figured out
>>> assuming everyone else at least this smart. Either way it does create
>>> an interesting position in which to view 3 phase and transformers with
>>> an extra resonant winding.
>>>
>>> By the way, ironic your implication that the large medical isolation
>>> transformers create a heretofore unknown vector of extreme danger.
>>>
>>> Mick
>>>
>>
>
>